Save register information when watchdog reset.

[jay2242]

Hi,
I use NRF52833 and SW: NCS version 1.4.1 and its zephyr version is 2.4.0.

I would like to know if there is method to record program counter, stack pointer information when watchdog reset occurs?

I know there is thread mentioned an example on dumping the stack. However, it seems not match my SW version.
    devzone.nordicsemi.com/.../saving-the-location-of-watchdog-timeout

Thanks

[SwRa]

Hi Jay,

The watchdog example in that thread is run using nRF5 SDK while you are using nRF Connect SDK(NCS). In NCS, you can find a Watchdog example in  NCS\v1.7.0\zephyr\samples\drivers\watchdog. However, the example doesn't demonstrate how to record the stack pointer information when watchdog reset occurs. I will look into it and get back to you on Monday.

Regards,

Swathy

[SwRa]

Hi Jay,

Sorry for the late reply. I contacted the experts and it is unlikely to do this. Right now, it is not possible to unwind the stack from the WDT callback as there are no helper functions in zephyr to do this. So my answer is that it is not supported.

Regards,

Swathy